26920428529309 has 16 divisors (see below), whose sum is σ = 30938775880320. Its totient is φ = 22945229922240.

The previous prime is 26920428529297. The next prime is 26920428529363. The reversal of 26920428529309 is 90392582402962.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 26920428529309 - 2¹¹ = 26920428527261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26920428529109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62109507 + ... + 62541439.

It is an arithmetic number, because the mean of its divisors is an integer number (1933673492520).

Almost surely, 2^{26920428529309} is an apocalyptic number.

It is an amenable number.

26920428529309 is a deficient number, since it is larger than the sum of its proper divisors (4018347351011).

26920428529309 is a wasteful number, since it uses less digits than its factorization.

26920428529309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481860.

The product of its (nonzero) digits is 33592320, while the sum is 61.

The spelling of 26920428529309 in words is "twenty-six trillion, nine hundred twenty billion, four hundred twenty-eight million, five hundred twenty-nine thousand, three hundred nine".